Split ScriptC from RenderScript.java. Implement state caching in the Builder objects.

graphics/java/android/renderscript/ScriptC.java

@@ -0,0 +1,106 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.renderscript;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+import android.content.res.Resources;
+
+
+/**
+ * @hide
+ **/
+public class ScriptC extends Script {
+    ScriptC(int id, RenderScript rs) {
+        super(id, rs);
+    }
+
+
+
+
+    public static class Builder extends Script.Builder {
+        byte[] mProgram;
+        int mProgramLength;
+
+        public Builder(RenderScript rs) {
+            super(rs);
+        }
+
+        public void setScript(String s) {
+            try {
+                mProgram = s.getBytes("UTF-8");
+                mProgramLength = mProgram.length;
+            } catch (java.io.UnsupportedEncodingException e) {
+                throw new RuntimeException(e);
+            }
+        }
+
+        public void setScript(Resources resources, int id) {
+            InputStream is = resources.openRawResource(id);
+            try {
+                try {
+                    setScript(is);
+                } finally {
+                    is.close();
+                }
+            } catch(IOException e) {
+                throw new Resources.NotFoundException();
+            }
+        }
+
+        public void  setScript(InputStream is) throws IOException {
+            byte[] buf = new byte[1024];
+            int currentPos = 0;
+            while(true) {
+                int bytesLeft = buf.length - currentPos;
+                if (bytesLeft == 0) {
+                    byte[] buf2 = new byte[buf.length * 2];
+                    System.arraycopy(buf, 0, buf2, 0, buf.length);
+                    buf = buf2;
+                    bytesLeft = buf.length - currentPos;
+                }
+                int bytesRead = is.read(buf, currentPos, bytesLeft);
+                if (bytesRead <= 0) {
+                    break;
+                }
+                currentPos += bytesRead;
+            }
+            mProgram = buf;
+            mProgramLength = currentPos;
+        }
+
+        static synchronized ScriptC internalCreate(Builder b) {
+            b.mRS.nScriptCBegin();
+            b.transferCreate();
+
+            b.mRS.nScriptCSetScript(b.mProgram, 0, b.mProgramLength);
+
+
+            int id = b.mRS.nScriptCCreate();
+            ScriptC obj = new ScriptC(id, b.mRS);
+            b.transferObject(obj);
+            return obj;
+        }
+
+        public ScriptC create() {
+            return internalCreate(this);
+        }
+    }
+
+}
+